| About this Abstract |
| Meeting |
MS&T23: Materials Science & Technology
|
| Symposium
|
Processing and Performance of Materials Using Microwaves, Electric and Magnetic Fields, Ultrasound, Lasers, and Mechanical Work – Rustum Roy Symposium
|
| Presentation Title |
Microstructure Evolution and Property Enhancement of 3D-printed Graphene via Cold Rolling |
| Author(s) |
Vamsi Krishna Reddy Kondapalli, Kyle Brittingham, Mahnoosh Khosravifar, Vesselin Shanov |
| On-Site Speaker (Planned) |
Vamsi Krishna Reddy Kondapalli |
| Abstract Scope |
Cold rolling is an established technique for processing metals and polymers to enhance their structure and properties. For graphene foams and aerogels, strategies like thermal processing, plasma, and chemical functionalization, hydrothermal and solvothermal techniques, etc. have been explored to enhance their properties. Here, we demonstrate a simple procedure to cold roll 3D printed graphene (3DPG) synthesized via Chemical Vapor Deposition. 3DPG samples with various designs and thicknesses were cold rolled and studied. It was found that structural design and the number of 3D printed layers affected the response of 3DPG to compressive stress. The performed characterization revealed stress accumulation in graphene flakes, suppression of internal porosity, and filling of structural pores via bulk extrusion which prevented structural failure. Folding, crimping, flake alignment along [002], and stacking with remarkable compressibility were also observed. This procedure demonstrated increased gravimetric density, electrical conductivity, and tensile strength by 37.3, 53.4, and 24.9 times respectively. |